A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5930-01-476-9758
NSN 6145-01-426-1640
NSN 2925-00-797-1042
NSN 5990-01-493-4039
NSN 5998-01-477-8376
NSN 5915-00-931-9990
NSN 6110-01-199-9175
NSN 5910-01-099-7264
NSN 5975-01-307-1057
NSN 6135-01-286-9563
NSN 5895-01-449-1371
NSN 5998-01-168-0180